bugfix by Zack, confirmed by Gary Ruben.
http://sourceforge.net/mailarchive/forum.php?thread_name=d8cf9020703071339y43354eaerbfa1a47d272e5d26%40mail.gmail.com&forum_name=matplotlib-users
Authored by: efiring 2007-09-30
Parent: [r3901]
Child: [r3903]